/*
* Copyright 2015 JBoss, by Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.uberfire.ext.widgets.core.client.editors.defaulteditor;
import java.util.Iterator;
import java.util.Map;
import com.google.gwt.core.client.GWT;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.Widget;
import org.gwtbootstrap3.client.ui.Form;
import org.gwtbootstrap3.client.ui.base.form.AbstractForm;
import org.uberfire.ext.widgets.common.client.common.FileUpload;
import org.uberfire.ext.widgets.common.client.common.FileUploadFormEncoder;
import org.uberfire.ext.widgets.core.client.resources.i18n.CoreConstants;
import org.uberfire.mvp.Command;
public abstract class DefaultEditorFileUploadBase
extends Composite {
private static DefaultEditorFileUploadBaseBinder uiBinder = GWT.create(DefaultEditorFileUploadBaseBinder.class);
@UiField
Form form;
@UiField(provided = true)
FileUpload fileUpload;
private Command successCallback;
private Command errorCallback;
private FileUploadFormEncoder formEncoder = new FileUploadFormEncoder();
public DefaultEditorFileUploadBase() {
this(true);
}
public DefaultEditorFileUploadBase(boolean showUpload) {
fileUpload = createFileUpload(showUpload);
initWidget(uiBinder.createAndBindUi(this));
initForm();
}
void initForm() {
form.setEncoding(FormPanel.ENCODING_MULTIPART);
form.setMethod(FormPanel.METHOD_POST);
formEncoder.addUtf8Charset(form);
// Validation is not performed in a SubmitHandler as it fails to be invoked with GWT-Bootstrap3. See:-
// - https://issues.jboss.org/browse/GUVNOR-2302 and
// - the underlying cause https://github.com/gwtbootstrap3/gwtbootstrap3/issues/375
// Validation is now performed prior to the form being submitted.
form.addSubmitCompleteHandler(new AbstractForm.SubmitCompleteHandler() {
@Override
public void onSubmitComplete(final AbstractForm.SubmitCompleteEvent event) {
if ("OK".equalsIgnoreCase(event.getResults())) {
Window.alert(CoreConstants.INSTANCE.UploadSuccess());
executeCallback(successCallback);
} else if ("FAIL".equalsIgnoreCase(event.getResults())) {
Window.alert(CoreConstants.INSTANCE.UploadFail());
executeCallback(errorCallback);
}
}
});
}
private FileUpload createFileUpload(boolean showUpload) {
return new FileUpload(new Command() {
@Override
public void execute() {
form.setAction(GWT.getModuleBaseURL() + "defaulteditor/upload" + createParametersForURL());
if (isValid()) {
form.submit();
}
}
},
showUpload);
}
//Package protected to support overriding for tests
boolean isValid() {
String fileName = fileUpload.getFilename();
if (isNullOrEmpty(fileName)) {
Window.alert(CoreConstants.INSTANCE.SelectFileToUpload());
executeCallback(errorCallback);
return false;
}
return true;
}
private boolean isNullOrEmpty(String fileName) {
return fileName == null || "".equals(fileName);
}
private String createParametersForURL() {
String parameters = "?";
Map<String, String> map = getParameters();
Iterator<String> iterator = map.keySet().iterator();
while (iterator.hasNext()) {
String parameter = iterator.next();
parameters += parameter + "=" + map.get(parameter);
if (iterator.hasNext()) {
parameters += "&";
}
}
return parameters;
}
protected abstract Map<String, String> getParameters();
public void upload(final Command successCallback,
final Command errorCallback) {
this.successCallback = successCallback;
this.errorCallback = errorCallback;
fileUpload.upload();
}
public String getFormFileName() {
return fileUpload.getFilename();
}
private void executeCallback(final Command callback) {
if (callback == null) {
return;
}
callback.execute();
}
interface DefaultEditorFileUploadBaseBinder
extends
UiBinder<Widget, DefaultEditorFileUploadBase> {
}
}